American Journal of Epidemiology Vol. 154, No. 12 : 1103-1104
Copyright © 2001 by The Johns Hopkins University School of Hygiene and Public Health
NUTRITIONAL EPIDEMIOLOGY |
Invited Commentary: Another Perspective on Food Frequency Questionnaires
1 From the School of Public Health, University of California, Berkeley, 426 Warren Hall, Berkeley, CA 94720-7360 (e-mail: gblock@uclink4.berkeley.edu).
Abbreviations: Block95, the 1995 version of the Block food frequency questionnaire (Block98 defined similarly); DHQ, Diet History Questionnaire; FFQ, food frequency questionnaire; FFQenergy, energy as estimated by FFQ; FFQnutrient, nutrient as estimated by FFQ; NHANES, National Health and Nutrition Examination Survey; RecordsEnergy, energy as estimated by records
As expected, Subar et al. (1
have produced an excellent study and a balanced report. Such work is important, so that we can continuously improve the instruments used in epidemiologic research, as well as those used in clinical or counseling situations or in nutrition policy decisions and recommendations.
It is important to note that Subar et al. decided to test the 1995 version of the Block food frequency questionnaire (FFQ) (Block95) instead of the 1998 version (Block98), which was available at the time. Block98 was developed from National Health and Nutrition Examination Survey (NHANES) III data, whereas Block95 had been based on NHANES II; Block98 also incorporates other design elements, such as additional low-fat food choices and portion-size pictures. The decision by Subar et al. to use the 1995 version was made to provide a greater contrast between the Diet History Questionnaire (DHQ) and an older FFQ method, since the
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Related articles in Am. J. Epidemiol.:
- Subar et al. Respond to "A Further Look at Dietary Questionnaire Validation" and "Another Perspective on Food Frequency Questionnaires"
- Amy F. Subar, Frances E. Thompson, and Victor Kipnis
Am. J. Epidemiol. 2001 154: 1105-1106.[Extract] [FREE Full Text]
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